Re: [PATCH v5 3/9] KVM-HDR: KVM Steal time implementation

From: Rik van Riel
Date: Tue Jul 05 2011 - 23:46:44 EST


On 07/04/2011 11:32 AM, Glauber Costa wrote:
To implement steal time, we need the hypervisor to pass the guest information
about how much time was spent running other processes outside the VM.
This is per-vcpu, and using the kvmclock structure for that is an abuse
we decided not to make.

In this patchset, I am introducing a new msr, KVM_MSR_STEAL_TIME, that
holds the memory area address containing information about steal time

This patch contains the headers for it. I am keeping it separate to facilitate
backports to people who wants to backport the kernel part but not the
hypervisor, or the other way around.

Signed-off-by: Glauber Costa<glommer@xxxxxxxxxx>
CC: Rik van Riel<riel@xxxxxxxxxx>
CC: Jeremy Fitzhardinge<jeremy.fitzhardinge@xxxxxxxxxx>
CC: Peter Zijlstra<peterz@xxxxxxxxxxxxx>
CC: Avi Kivity<avi@xxxxxxxxxx>
CC: Anthony Liguori<aliguori@xxxxxxxxxx>
CC: Eric B Munson<emunson@xxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>


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